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Finding the Fourth Proportional to 111,602.85, 153,968.51 and 63,193.66

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Solution

The fourth proportional to 111,602.85, 153,968.51 and 63,193.66 is: 87,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,602.85 : 153,968.51 = 63,193.66 : x
  2. Step 2: Convert to fraction form
    111,602.85/153,968.51 = 63,193.66/x
  3. Step 3: Cross multiply
    111,602.85x = 153,968.51 × 63,193.66
  4. Step 4: Simplify right side
    111,602.85x = 9,729,833,671.65
  5. Step 5: Solve for x
    x = 9,729,833,671.65/111,602.85
  6. Step 6: Final answer
    x = 87,182.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.